Universal LED Dimming Controller for TRIAC and Switch Compatibility

Solution Overview

Problem

Existing lighting control systems for LEDs lack flexibility in dimming control, as they require different controller structures for TRIAC and on/off switch dimmers, limiting their adaptability and efficiency.

Innovation Solution

A controller that monitors rectified voltage to detect whether it comes from a TRIAC dimmer or an on/off switch dimmer, adjusting output power accordingly to control dimming, ensuring compatibility with various dimming techniques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If distinct controller structures are used for TRIAC and on/off switch dimmers, then each dimmer type can be controlled accurately, but the device complexity and flexibility increase

Engineering Contradiction:

Improvedimming control accuracyVSAvoidcontroller structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The controller is designed to support multiple dimming techniques (TRIAC and on/off switch) within a single device. The controller includes a detection module that identifies the dimmer type and automatically configures the appropriate control strategy, eliminating the need for separate controller structures for each dimmer type while maintaining accurate control for both.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The controller dynamically adapts its operation mode based on the detected dimmer type. When a TRIAC dimmer is detected, the controller implements TRIAC-specific control; when an on/off switch dimmer is detected, it implements switch-specific control. This dynamic adaptation allows a single controller structure to handle different dimmer types effectively.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a single controller structure is used for all dimmer types, then device complexity is reduced, but adaptability to different dimming techniques deteriorates

Engineering Contradiction:

Improvecontroller structureVSAvoiddimmer type compatibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The controller is designed to support multiple dimming techniques (TRIAC and on/off switch) within a single device. The controller includes a detection module that identifies the dimmer type and automatically configures the appropriate control strategy, eliminating the need for separate controller structures for each dimmer type while maintaining accurate control for both.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The controller incorporates a detection module that monitors the rectified voltage characteristics to identify the dimmer type. This feedback mechanism allows the controller to automatically adjust its control parameters and operation mode based on the detected dimmer type, ensuring proper adaptation without requiring manual configuration or multiple dedicated controllers.

Inventive Principle:

Principle #23Feedback

3Ease of operation

If TRIAC dimming control is implemented, then continuous dimming adjustment is achieved, but compatibility with on/off switch dimmers is lost

Engineering Contradiction:

Improvedimming adjustment smoothnessVSAvoiddimmer type compatibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The controller dynamically adapts its operation mode based on the detected dimmer type. When a TRIAC dimmer is detected, the controller implements TRIAC-specific control for smooth continuous dimming; when an on/off switch dimmer is detected, it implements switch-specific control for discrete dimming levels. This dynamic adaptation allows the system to maintain optimal performance for each dimmer type.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The controller is designed to support multiple dimming techniques (TRIAC and on/off switch) within a single device. The controller includes a detection module that identifies the dimmer type and automatically configures the appropriate control strategy, eliminating the need for separate controller structures for each dimmer type while maintaining accurate control for both.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8305013B2Circuits and methods for controlling dimming of a light source

Publication Date: 2012.11.06 FEIT ELECTRIC CO INC

AI summary

A controller that monitors a rectified voltage and detects whether the rectified voltage comes from a TRIAC dimmer or an on/off switch dimmer is disclosed. The controller controls dimming of a light source according to the rectified voltage if the rectified voltage comes from the TRIAC dimmer. The controller controls dimming of the light source according to an operation of the on/off switch dimmer if the rectified voltage comes from the on/off switch dimmer.